Trading fraud Kamai trading

in telegram channel i got their live videos , post of money increase..5k to 10k , 15k to 50k , live videos of profit earning. I invested today 5k ..they took all detail. I paid it to [UPI] . they again asked to pay 11990/ to start registration or trade account which i denies. i asked for refund of 5k ..but they couldn't / dint. immediately they banned me from their channel and change the logo . they erased all the chat but I took few shots .